Many rooms from the Age of Mansions have gone obsolete:
Library
Smoking room/den
Scullery
Gun room
Skullduggery room
Boudoir
On the way out: formal dining room
There hasn’t been a new kind of room for homes in forever, even the workshop-garage is a hack, not new
Conversation
The home office isn’t really a new kind of room for the home but a transplanted office room
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The “study” proper has also disappeared, absorbed into some sort of den+home-office.
I guess home theater groom counts as an evolution of the living room?
Game room/“man cave” with Xbox and foosball and VR = billiards room of past, so not new
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We barely scratched the surface in the yak collective “new old home” report
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Design us a stack room
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The library has been replaced by the internet now, but it vanished as a standard room before then. Got distributed as bookshelves scattered across other rooms.
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Armories were common once. Now they are gun closets. Though dedicated gun types seem to have workshops. A workbench I have my eye on has a glowing review from a guy who uses it as a reloading bench. Which is apparently a specialized thing in make-your-own-ammo world.
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To inhabit the stack well, one must have money, and a room of one’s own
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I can see converting vacant storefronts into a coworking space like this with several tenants. But then I work out of the biology/chem equivalent.
With no room for my mechanical workshop atm however.
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I think the key is to imagine it as a single household space, not communal. Home or cloud, nothing in between. Sharing happens through p2p tool and space lending

